With over 200,000 casualties and at least 20,000 rape cases reported, 1937's Nanking Massacre is one of World War II's most overlooked tragedies. However, the documentary 'Nanking' is bound to change that. The film, originally released in 2007, sets out to educate those who never had the chance to read about the incident -- which some have called "the forgotten holocaust" -- in their history books. Recounting both the massacre and the heroic efforts of those who tried to stop it, the film uses historical footage, staged readings of the heroes' diaries with the help of actors Woody Harrelson, Mariel Hemingway and others. In the end, 'Nanking' is both educational and engaging and, courtesy of our friends at SnagFilms, now available to watch free online.

The film's already found a fan in Lou Reed, who was so affected by it, that the rock legend wrote two songs about the massacres. Though the songs don't appear in the movie itself, they pretty much serve as a companion piece to it. 'Gravity' is the moodier of the two songs, providing dark instrumentals that perfectly capture the incident's atmosphere. On the other hand, 'Safety Zone' uses its lyrics to outline his thoughts on the tragedy itself. Thanks to both 'Nanking' and Reed's new tracks, the victims of the Nanking Massacre may finally get the recognition they deserve. Who says rock 'n' roll can't change the world?